Endress+Hauser Levelflex FMP56 Operating Instructions Manual page 151

Levelflex FMP56, FMP57 HART
Level unit
Navigation
Description
Selection
Factory setting
Additional information
Blocking distance
Navigation
Description
User entry
Factory setting
Additional information
Endress+Hauser
 Setup → Advanced setup → Level → Level unit
Select level unit.
SI units
• %
• m
• mm
%
The level unit may differ from the distance unit defined in the Distance unit parameter
(→  138):
• The unit defined in the Distance unit parameter is used for the basic calibration (Empty
calibration (→  139) and Full calibration (→  139)).
• The unit defined in the Level unit parameter is used to display the (unlinearized) level.
 Setup → Advanced setup → Level → Blocking distance
Specify upper blocking distance UB.
0 to 200 m
• For rod and rope probes up to 8 m (26 ft): 200 mm (8 in)
• For rod and rope probes above 8 m (26 ft): 0.025 * Sondenlänge
Signals in the upper blocking distance are only evaluated if they have been outside the
blocking distance when the device was switched on and move into the blocking distance
due to a level change during operation. Signals which are already in the blocking distance
when the device is switched on, are ignored.
This behavior is only valid if the following two conditions are met:
• Expert → Sensor → Echo tracking → Evaluation mode = Short time history or Long
time history)
• Expert → Sensor → Gas phase compensation → GPC mode= On, Without correction
or External correction
If one of these conditions is not met, signals in the blocking distance will always be
ignored.
A different behavior for signals in the blocking distance can be defined in the
Blocking distance evaluation mode parameter.
If required, a different behavior for signals in the blocking distance can be defined by
the Endress+Hauser service.
US units
• ft
• in
Operating menu
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